Figure 9From: Axon-bearing and axon-less horizontal cell subtypes are generated consecutively during chick retinal development from progenitors that are sensitive to follistatinEffects on other cell populations following follistatin treatment. Control (A, C, and E) or follistatin-treated retinas (B, D, and F) stained for Prox1 (A-F, red) and Lim3 (A-B, green), Ap2α (C-D, green) and Isl1 (E-F, green). All injections were made at st23 and analysed at st35. With respect to the thickness of immuno-labelled bands, all markers appear grossly normal after follistatin injection. (G-I): Quantification of immuno-labelled cells in 40× visual fields. Blue squares indicate the means of individual control treated animals and red circles indicate the means of individual follistatin-treated animals. The medians are indicated by a black line. Using the above markers, no significant differences (p < 0.05, Mann-Whitney test) were found between control or follistatin treated retinas with respect to the number of photoreceptors, bipolar cells, amacrine cells or ganglion cells. Note that the Isl1+ cells quantified in 9I include both Isl1+ ganglion and amacrine cells. Scale bar is 20 μm (valid for A-F).Back to article page